First printed in Scourge (2003)
Lethal Vapors 
Enchantment
Whenever a creature enters, destroy it.
: Destroy this enchantment. You skip your next turn. Any player may activate this ability.
Combos
31 combos from Commander Spellbook, the most popular first.
- Skip all your future turns, causing your opponents to eventually draw from an empty library and lose the game, You have protection from everything…: Grand Abolisher + Lethal Vapors + Teferi's Protection
- Destroy all creatures that enter the battlefield, Lock: Lethal Vapors + Pithing Needle
- Destroy all creatures that enter the battlefield, Lock: Avacyn, Angel of Hope + Lethal Vapors
- Destroy all creatures that enter the battlefield, Lock: Lethal Vapors + Phyrexian Revoker
- Skip all your future turns, causing your opponents to eventually draw from an empty library and lose the game, You have protection from everything…: Lethal Vapors + Teferi's Protection + Tithe Taker
- Skip all your future turns, causing your opponents to eventually draw from an empty library and lose the game, You have protection from everything…: Lethal Vapors + Teferi's Protection + Trickbind
- Destroy all creatures that enter the battlefield, Lock: Indestructibility + Lethal Vapors
- Destroy all creatures that enter the battlefield, Lock: Lethal Vapors + Sorcerous Spyglass
- Skip all your future turns, causing your opponents to eventually draw from an empty library and lose the game, You have protection from everything…: Krosan Grip + Lethal Vapors + Teferi's Protection
- Skip all your future turns, causing your opponents to eventually draw from an empty library and lose the game, You have protection from everything…: Lethal Vapors + Teferi's Protection + Wipe Away
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Not legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Not legal
- Timeless Not legal
- Alchemy Not legal
- Penny Dreadful Not legal
- Premodern Legal
- Old School 93/94 Not legal
Singleton
- Gladiator Not legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Not legal
- Oathbreaker Legal
- Brawl Not legal
- Standard Brawl Not legal
- Competitive Brawl Not legal